NiAg0.4 3D porous nanoclusters with epitaxial interfaces exhibiting Pt like activity towards hydrogen evolution in alkaline medium

Nanoscale ◽  
2020 ◽  
Vol 12 (15) ◽  
pp. 8432-8442 ◽  
Author(s):  
Chidanand Hegde ◽  
Xiaoli Sun ◽  
Hao Ren ◽  
Aijian Huang ◽  
Daobin Liu ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Alkaline Medium ◽  
Hydrogen Evolution Reaction

The Ni–Ag interface furnishes a reduced energy pathway for the enhanced hydrogen evolution reaction.

Co2Ni alloy/N-doped CNTs composite as efficient hydrogen evolution reaction catalyst in alkaline medium

2019 ◽  
Vol 791 ◽  
pp. 779-785 ◽  
Author(s):  
Yu Jia ◽  
Xuehui Gao ◽  
Changqing Teng ◽  
Xiaoyu Li ◽  
Yi Liu ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Alkaline Medium ◽  
Hydrogen Evolution Reaction

scholarly journals Three-dimensionally ordered macro-/mesoporous Ni as a highly efficient electrocatalyst for the hydrogen evolution reaction

2015 ◽  
Vol 3 (21) ◽  
pp. 11367-11375 ◽  
Author(s):  
Tingting Sun ◽  
Chengwei Zhang ◽  
Jianfeng Chen ◽  
Yushan Yan ◽  
Anvar A. Zakhidov ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Alkaline Medium ◽  
Hydrogen Evolution Reaction ◽  
Highly Efficient

A novel three-dimensionally ordered macro-/mesoporous Ni electrocatalyst is fabricated and shows excellent properties for the hydrogen evolution reaction in alkaline medium.

Molten Salt Synthesized MgNiO2 Micro/Nano-Particles for High Energy Density Supercapacitor and Electrocatalyst for Hydrogen Evolution Reaction in Alkaline Medium

2021 ◽  
Vol 21 (11) ◽  
pp. 5556-5568
Author(s):  
S. Maitra ◽  
R. Mitra ◽  
T. K. Nath
Keyword(s):  
Solid Solution ◽  
Energy Density ◽  
Molten Salt ◽  
Hydrogen Evolution ◽  
Alkaline Medium ◽  
Hydrogen Evolution Reaction ◽  
High Energy ◽  
Nano Particles ◽  
High Energy Density ◽  
Phonon Modes

In recent years, solid solutions have shown promising results as functional materials for different applications. These materials have tunable physiochemical properties and electronic properties, and are being intensively studied for next generation electrochemical charge storage as well as noble metal free low cost electrocatalyts. In the present work, Magnesium Nickel Oxide (MgNiO2) solid solution is prepared by molten salt synthesis. MgNiO2 particles having octahedron shaped morphology with size of 550 nm with an agglomerative behavior was observed through morphological studies. Raman studies revealed presence of three two-phonon modes as well as two one-phonon modes, which confirm the phase purity of MgNiO2 sample. MgNiO2 particles behaved as a promising supercapacitor candidate by exhibiting a large specific capacitance of 76 F/g. It also revealed electrochemical stability over an expansive potential range under the presence of 0.5 mol L-1Sodium Sulfate (Na2SO4) electrolyte, having a high energy density of nearly 51 Wh/kg with a power density of nearly 825 w/kg. Further, MgNiO2 particle showed improved electrocatalytic potential towards Hydrogen Evolution Reaction (HER) in 1 mol L-1 Potassium Hydroxide (KOH) alkaline medium, by demonstrating an overpotential of 0.636 V with a Tafel slope of 0.22205 v/dec. Based on these observed promising results, it can be conclusively inferred that MgNiO2 solid solution is a potential candidate for environmental friendly high voltage supercapacitor and HER electrocatalyst applications.

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